The Vickers hardness test is subdivided into three types of tests according to the size of the test force, namely: Vickers hardness test, small load Vickers hardness test and micro Vickers hardness test. See Table 1
Table 1 Three methods of Vickers hardness test
|
Force range /N |
Hardness symbol |
Test name |
|
F≥49.03 |
≥HV5 |
Vickers hardness test |
|
1.961≤F<49.03 |
HV0.2 ～ |
Small load Vickers hardness test |
|
0.09807≤F<1.961 |
HV0.01 ～ |
Micro Vickers hardness test |
There are many test force values available for Vickers hardness test, see the table below.
Recommended Vickers hardness test force
|
Vickers hardness test |
Small load Vickers hardness test |
Micro Vickers hardness test |
|||
|
Symbol |
Force /N |
Symbol |
Force /N |
Symbol |
Force /N |
|
HV5 |
49.03 |
HV0.2 |
1.961 |
HV0.01 |
0.09807 |
|
HV10 |
98.07 |
HV0.3 |
2.942 |
HV0.015 |
0.1471 |
|
HV20 |
196.1 |
HV0.5 |
4.903 |
HV0.02 |
0.1961 |
|
HV30 |
294.2 |
HV1 |
9.807 |
HV0.025 |
0.2452 |
|
HV50 |
490.3 |
HV2 |
19.61 |
HV0.05 |
0.4903 |
|
HV100 |
980.7 |
HV3 |
29.42 |
HV0.1 |
0.9807 |
|
Note： 1. Vickers hardness test can use a test force greater than 980.7N; 2. Micro Vickers test force is the recommended value. |
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